1 files changed, 64 insertions, 0 deletions
diff --git a/src/plugins/multimedia/ffmpeg/recordingengine/qffmpegvideoencoderutils_p.h b/src/plugins/multimedia/ffmpeg/recordingengine/qffmpegvideoencoderutils_p.h
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index 000000000..3a16a7de3
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+++ b/src/plugins/multimedia/ffmpeg/recordingengine/qffmpegvideoencoderutils_p.h
@@ -0,0 +1,64 @@
+// Copyright (C) 2022 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
+#ifndef QFFMPEGVIDEOENCODERUTILS_P_H
+#define QFFMPEGVIDEOENCODERUTILS_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "qffmpeg_p.h"
+#include "qffmpeghwaccel_p.h"
+
+QT_BEGIN_NAMESPACE
+
+namespace QFFmpeg {
+
+AVPixelFormat findTargetSWFormat(AVPixelFormat sourceSWFormat, const AVCodec *codec,
+                                 const HWAccel &accel);
+
+AVPixelFormat findTargetFormat(AVPixelFormat sourceFormat, AVPixelFormat sourceSWFormat,
+                               const AVCodec *codec, const HWAccel *accel);
+
+std::pair<const AVCodec *, std::unique_ptr<HWAccel>> findHwEncoder(AVCodecID codecID,
+                                                                   const QSize &sourceSize);
+
+const AVCodec *findSwEncoder(AVCodecID codecID, AVPixelFormat sourceSWFormat);
+
+/**
+ * @brief adjustFrameRate get a rational frame rate be requested qreal rate.
+ *        If the codec supports fixed frame rate (non-null supportedRates),
+ *        the function selects the most suitable one,
+ *        otherwise just makes AVRational from qreal.
+ */
+AVRational adjustFrameRate(const AVRational *supportedRates, qreal requestedRate);
+
+/**
+ * @brief adjustFrameTimeBase gets adjusted timebase by a list of supported frame rates
+ *        and an already adjusted frame rate.
+ *
+ *        Timebase is the fundamental unit of time (in seconds) in terms
+ *        of which frame timestamps are represented.
+ *        For fixed-fps content (non-null supportedRates),
+ *        timebase should be 1/framerate.
+ *
+ *        For more information, see AVStream::time_base and AVCodecContext::time_base.
+ *
+ *        The adjusted time base is supposed to be set to stream and codec context.
+ */
+AVRational adjustFrameTimeBase(const AVRational *supportedRates, AVRational frameRate);
+
+QSize adjustVideoResolution(const AVCodec *codec, QSize requestedResolution);
+
+} // namespace QFFmpeg
+
+QT_END_NAMESPACE
+
+#endif // QFFMPEGVIDEOENCODERUTILS_P_H